Key Takeaways
- • US spot bitcoin ETFs took in a net $1.07 billion over Oct. 19 to 21, according to Farside Investors' flow table, reversing a run of outflows earlier in the month.
- • Oct. 19 net inflow of $526.7 million was driven by BlackRock's IBIT at $665.2 million, offset by outflows from Fidelity's FBTC ($83.6 million) and Grayscale's GBTC ($54.9 million).
- • Oct. 21 net inflow of $524.8 million was broader, with seven funds posting inflows and none posting outflows; IBIT took $235.0 million and FBTC $212.7 million.
- • Three-day average inflow of roughly $358 million per day exceeds the $235 million daily average across three prior steep rallies, but the post-July pace of about $86 million per day remains far below that level.
- • Analysts flag that three sessions do not establish a trend; sustained weeks near $200 million per day, with more $500 million sessions, would be needed to confirm a rally.
Summary
US spot bitcoin ETFs took in a net $1.07 billion over the first three trading days of the week of Oct. 19 to 21, according to daily totals on Farside Investors' flow table. The inflows reverse a run of outflows earlier in the month, when the funds lost a net $484.9 million on Oct. 7 and $261.4 million on Oct. 14. Cumulative net flows into the US products stand at $58.02 billion per Farside, with IBIT accounting for $66.50 billion and GBTC at negative $27.97 billion.
The three days were uneven. Two strong sessions drove most of the total, with a quiet day between them. Oct. 19 brought a net $526.7 million, led by BlackRock's IBIT at $665.2 million, while Fidelity's FBTC lost $83.6 million and Grayscale's GBTC lost $54.9 million. Oct. 20 saw only $23.2 million in net inflows. Oct. 21 brought $524.8 million, led by IBIT at $235.0 million and FBTC at $212.7 million. Wednesday's inflows were broader, with seven funds posting gains and none recording outflows.
A CoinDesk analysis of SoSoValue data identifies three prior steep bitcoin rallies since the ETFs launched in January 2024, defined as gains above 50% with no drawdown deeper than 20% from the high. Those rallies averaged daily ETF inflows of $294 million (Jan. to Mar. 2024), $202 million (Aug. to Dec. 2024) and $248 million (Apr. to Jul. 2025). Across 199 trading days in those periods, the funds took in $46.7 billion, about $235 million a day, with 39 days of $500 million or more and six of $1 billion or more.
The pace since July has been considerably weaker. Bitcoin has gained 39% since July 1, rising from about $60,000 to $83,500, while ETF inflows averaged about $86 million a day. The funds logged only seven days of $500 million or more and no $1 billion days over that stretch. The week's three-day average of roughly $358 million sits above the rally-era average, but the article notes that three days do not constitute a trend, and that earlier rallies sustained a pace above $200 million per day for seven weeks to four and a half months. These per-day averages were not checked against raw daily data. Futures positioning and direct spot purchases may also lift prices without appearing in ETF flow figures.
The key test is whether the funds can sustain weeks near $200 million per day with additional $500 million sessions. A return to outflows on the scale of Oct. 7 would reinforce the post-July pattern, in which bitcoin has risen on considerably thinner ETF demand than in its three steep prior rallies.
The three days were uneven. Two strong sessions drove most of the total, with a quiet day between them. Oct. 19 brought a net $526.7 million, led by BlackRock's IBIT at $665.2 million, while Fidelity's FBTC lost $83.6 million and Grayscale's GBTC lost $54.9 million. Oct. 20 saw only $23.2 million in net inflows. Oct. 21 brought $524.8 million, led by IBIT at $235.0 million and FBTC at $212.7 million. Wednesday's inflows were broader, with seven funds posting gains and none recording outflows.
A CoinDesk analysis of SoSoValue data identifies three prior steep bitcoin rallies since the ETFs launched in January 2024, defined as gains above 50% with no drawdown deeper than 20% from the high. Those rallies averaged daily ETF inflows of $294 million (Jan. to Mar. 2024), $202 million (Aug. to Dec. 2024) and $248 million (Apr. to Jul. 2025). Across 199 trading days in those periods, the funds took in $46.7 billion, about $235 million a day, with 39 days of $500 million or more and six of $1 billion or more.
The pace since July has been considerably weaker. Bitcoin has gained 39% since July 1, rising from about $60,000 to $83,500, while ETF inflows averaged about $86 million a day. The funds logged only seven days of $500 million or more and no $1 billion days over that stretch. The week's three-day average of roughly $358 million sits above the rally-era average, but the article notes that three days do not constitute a trend, and that earlier rallies sustained a pace above $200 million per day for seven weeks to four and a half months. These per-day averages were not checked against raw daily data. Futures positioning and direct spot purchases may also lift prices without appearing in ETF flow figures.
The key test is whether the funds can sustain weeks near $200 million per day with additional $500 million sessions. A return to outflows on the scale of Oct. 7 would reinforce the post-July pattern, in which bitcoin has risen on considerably thinner ETF demand than in its three steep prior rallies.
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